What is CVE-2022-27777?

CVE-2022-27777 is a medium-severity vulnerability in Rubyonrails Actionpack, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-05-26.

How severe is CVE-2022-27777?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Rubyonrails Actionpack

CVE-2022-27777

A XSS Vulnerability in Action View tag helpers >= 5.2.0 and < 5.2.0 which would allow an attacker to inject content if able to control input into specific attributes.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-05-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.016 (75.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Rubyonrails Actionpack
Debian Linux — versions 10.0
Https://github.com/rails/rails — versions 7.0.2.4, 6.1.5.1, 6.0.4.8, 5.2.7.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

discuss.rubyonrails.org/t/cve-2022-27777-possible-xss-vulnerability-in-action-v… (Exploit, Patch, Vendor Advisory)
lists.debian.org/debian-lts-announce/2022/09/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
www.debian.org/security/2023/dsa-5372 (vendor-advisory)

Frequently asked questions

What is CVE-2022-27777?: CVE-2022-27777 is a medium-severity vulnerability in Rubyonrails Actionpack, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-05-26.
How severe is CVE-2022-27777?: Medium severity. CVSS v3 base score is 6.1 out of 10.